反转构造的反转程度及其与油气聚集的关系

结合典型反转构造地震剖面，分析了断层型和褶皱型两类反转构造的反转程度，上下皆正断层型和向形褶皱型反转构造的反转程度轻微；上逆下正断层型和透镜形褶皱型反转构造的反转程度中等；上下皆逆断层型和背形褶皱型反转构造的反转程度强烈。分析了反转构造的反转程度与油气聚集的关系，处于轻微反转程度的上下皆正断层型反转和向形褶皱型反转，以及处于强烈反转程度的上下皆逆断层型反转和背形褶皱型反转不利于油气聚集；处于中等反转程度的上逆下正断层型反转和透镜形褶皱型反转类型有利于油气聚集成藏。     

论理工类工业设计的素描教学改革

理工类学生由于入学前很少经过系统的美术专业训练,造型基础十分薄弱,但其在毕业时,其设计能力并不比文科生艺术生要求低,甚至在当今社会中,很大一部分企业对有着理工背景的专业设计人才的要求日益迫切。如何尽快地使其在长期固化的理性思维向活泼开放的感性思维,这是一个新的领域和挑战。素描作为其学习的第一门专业基础课,其改革势在必行。     

Hydrothermal Synthesis of CdMoO4 Nano-Particles

CdMoO₄ nano-particles were successfully synthesized by a hydrothermal process at a low temperature of 90°C, and the powders were characterized in detail by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and photoluminescent spectra techniques (PL), respectively. CdMoO₄ particles could be obtained under the hydrothermal condition from micrometer to nanometer sizes by varying their precursors. The PL spectra results showed that the optical properties of CdMoO₄ crystallites obviously relied on their particle sizes.     

大跨度楼盖结构在运动荷载下的振动性能

为研究人员运动荷载下大跨度楼盖的振动特性,以内蒙古伊旗全民健身体育中心大跨度张弦梁楼盖体系为背景,采用生物力学测力平台进行人员行走、跑步、跳跃、起立等运动荷载实测和相关分析研究.考虑可能出现的各种运动荷载工况,对大跨度张弦梁楼盖区振动开展有限元分析和现场实测.分析表明:行走、跑步及跳跃荷载工况下,人员动力放大系数分别约为1.2、2.4及4.9,大跨度楼盖在人员运动荷载数值模型激励下,所得有限元分析结果与现场实测竖向加速度峰值及理论计算值吻合较好.     

相参脉冲雷达中频采样条件研究

针对相参脉冲雷达中频采样问题,通过对采样过程的分析与建模,提出了相参脉冲雷达中频采样应满足的三个条件.详细分析了采样条件不满足情况对后续信号处理的影响,并针对具体工程应用给出了解决方案.所得结论对相参脉冲雷达中频数字接收机和通用雷达数据采集系统设计具有一定的指导意义.     

Direct Growth of Uniform Bimetallic Core-Shell or Intermetallic Nanoparticles on Carbon via a Surface-Confinement Strategy for Electrochemical Hydrogen Evolution Reaction

Due to the surface inhomogeneity of the solid supports, direct growth of uniform bimetallic nanoparticles (NPs) with controllable structure and size thereon is particularly challenging. Herein, a surface-confinement strategy is reported to directly prepare ultrafine bimetallic Pt M NPs (MFe, Cu, and Co) with structure of core-shell or intermetallic compounds on an N functionalized carbon support (NC). It is found that the N species of NC support can atomically disperse metal cations of precursors, which largely renders uniform nucleation and growth of bimetallic NPs and fine structure modulation of them. In another regard, metal transfer is confined to a narrow region on NC via N-mediation, hence greatly favoring localized particle growth and formation of ultrafine bimetallic NPs. Remarkably, the ultrafine 3.1 ± 0.7 nm intermetallic Pt₃Fe NPs on NC displayed excellent catalytic activity and durability toward electrochemical hydrogen evolution reaction.     

相位调制微波光传输链路特性分析（特邀）

常规的微波光子系统采用强度调制方式实现微波信号的电光转换,由于调制器采用马赫-曾德尔干涉结构(MZI),系统性能不仅受到自身正弦响应特性的制约,而且需要进行偏置点控制,因此存在动态范围受限、系统控制复杂以及3 dB固有损耗带来的效率不足的问题,而采用相位调制可避免该问题。围绕相位调制光传输链路,为了完成相位调制信号的光电解调,文章提出采用薄膜滤波器通过边带抑制与边带选通两种方式实现相位调制到强度调制的转换,并分析了链路射频性能与器件参数之间的映射关系。实测对比了相位调制与常规强度调制链路之间的传输特性,通过分析可知,在相同链路配置条件下,相位调制链路具有更高的传输效率,而且光滤波带来的均衡作用,使得相位调制链路的3 dB带宽比强度调制链路大两倍。     

Recent advances in controlled modification of the size and morphology of metal-organic frameworks

Advances in metal-organic frameworks (MOFs) resulted in significant contributions to diverse applications such as carbon capture, gas storage, heat transformation and separation along with emerging applications toward catalysis, medical imaging, drug delivery, and sensing. The unique in situ and ex situ structural features of MOFs can be tailored by conceptual selection of the organic (e.g., ligand) and inorganic (e.g., metal) components. Here, we provide a comprehensive review on the synthesis and characterization of MOFs, particularly with respect to controlling their size and morphology. A better understanding of the specific size and morphological parameters of MOFs will help initiate a new era for their real-world applications. Most importantly, this assessment will help develop novel synthesis methods for MOFs and their hybrid/porous materials counterparts with considerably improved properties in targeted applications.

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分组移动对象的区域偏离监视算法

以大量可分组移动对象的区域偏离监视问题为研究背景,扩展了基于区域覆盖的空间索引结构——虚拟网格四分树,提出了一种新的索引结构VGQ_G。基于VGQ_G,实现了区域偏离监视算法RDMA;给出了监视算法的性能对比实验。实验结果表明,在移动对象数量足够大的时候,设计的监视算法比朴素的监视算法在响应时间上提高了一个数量级。     

电磁搅拌技术在110t铝合金熔炼炉中的应用

对电磁搅拌器在生产实际应用中做优化设计,实现节能与环保,为企业带来良好的经济效益。